The five most popular questions specifically about the story content of episode 3 'WE ARE NOTHING!' of #1 Happy Family USA are:

1. What is the significance of the government's new secret spy program 'See Something, Say Something' in the episode?
2. How does the Hussein family respond to the government's surveillance and suspicion?
3. What role does the theme of invisibility or 'being nothing' play in the episode's story?
4. How are the characters of Hussein and his family portrayed in relation to the spy program?
5. What are the key comedic or dramatic moments that highlight the family's experience under government scrutiny?

These questions focus on the episode's plot elements involving government surveillance, family dynamics, and the thematic message conveyed through the story, excluding general plot or ending inquiries.